Jackson’s parents are divorced and his mother has started dating. Gig’s dad is in the National Guard and has been called up to serve in the Middle East. Isaac’s dad wants him to go to a different middle school than all his friends. Diego is the new kid in school, a power-hitter who works with his family on the weekends and can’t make every team practice. These four friends lead different lives, but on the baseball field, they’re a strong team, the top of the order. In this crucial last year of elementary school, they’re faced with preparing for middle school and dealing with a new member of their team—a girl!